diff --git a/tools/l10n/android2po/requirements.txt b/tools/l10n/android2po/requirements.txt
index e92aa265d..f0ef56d11 100644
--- a/tools/l10n/android2po/requirements.txt
+++ b/tools/l10n/android2po/requirements.txt
@@ -2,6 +2,6 @@
 
 argparse
 babel==2.4
-lxml==3.8.0
+lxml==4.6.3
 ordereddict
 termcolor